SLIDESHOW: U.S. Triple Crown Winners from Sir Barton to American Pharoah
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The U.S. Triple Crown in Thoroughbred racing has been swept by only 12 horses in the history of the sport. It takes a special racehorse to win the 1 1/4-mile Kentucky Derby, the 1 3/16-mile Preakness Stakes, and the 1 1/2-mile Belmont Stakes in a five-week stretch during the spring of a 3-year-old campaign.
Let's take a look back at the 12 superstars in this slideshow below who were able to etch their names in the history books as Triple Crown winners.